The Republic - pg. 72

"Your supposition is most correct," I said. And now I suppose
I can make plain to you what I couldn't before. Of poetry and
tale-telling, one kind proceeds wholly by imitation - as you say,
tragedy and comedy; another, by the poet's own report - this,
of course, you would find especially in dithyrambs; and still
another by both - this is found in epic poetry and many other
places too, if you understand me."